This is a A-AH150900 Idler, Feed Accelerator & Secondary Jackshaft PN: AH150900Main Description As Following : A-AH150900 Idler, Feed Accelerator & Secondary Jackshaft P.N: AH150900 Inside Diameter: .698"Overall Diameter: 6.500"Width: 2.250" Crossed From: AV103540 VAPORMATIC , C1500 SHOUP Found in Section & Models : Headers/Platforms/Feeder House > Feeder House Parts, John Deere COMBINE: S550, John Deere COMBINE: S650, John Deere COMBINE: S660, John Deere COMBINE: S680, John Deere COMBINE: S690, John Deere COMBINE: S760, John Deere COMBINE: S770, John Deere COMBINE: S780, John Deere COMBINE: S785, John Deere COMBINE: S790, John Deere COMBINE: T550, John Deere COMBINE: T560, John Deere COMBINE: T660, John Deere COMBINE: 9560STS, John Deere COMBINE: 9570STS, John Deere COMBINE: 9650STS, John Deere COMBINE: 9660STS, John Deere COMBINE: 9670STS, John Deere COMBINE: 9750STS, John Deere COMBINE: 9760STS Associated Items : New Also This is An Aftermarket Product And : Inside Diameter: .698" Overall Diameter: 6.500" Width: 2.250"